A great place to learn some history dating back to...

A great place to learn some history dating back to the 11th century and see the British crowns. There are also cafes and sovienier shops over there holding a variety of things.
It also holds British armoury and cannons along with a museum presiding for the fusilier army museum.
I would say to visit the it early and is close to train station tower hill. Whereas you can also take a boat ride to Westminster pier from tower pier.